mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-16 22:58:09 +00:00
363 lines
8.8 KiB
C++
363 lines
8.8 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "common/algorithm.h"
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#include "common/endian.h"
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#include "common/memstream.h"
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#include "access/access.h"
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#include "access/asurface.h"
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namespace Access {
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SpriteResource::SpriteResource(AccessEngine *vm, const byte *data, uint32 size,
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DisposeAfterUse::Flag disposeMemory) {
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Common::MemoryReadStream stream(data, size);
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Common::Array<uint32> offsets;
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int count = stream.readUint16LE();
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for (int i = 0; i < count; i++)
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offsets.push_back(stream.readUint32LE());
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offsets.push_back(size); // For easier calculations of Noctropolis sizes
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// Build up the frames
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for (int i = 0; i < count; ++i) {
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stream.seek(offsets[i]);
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int frameSize = offsets[i + 1] - offsets[i];
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SpriteFrame *frame = new SpriteFrame(vm, stream, frameSize);
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_frames.push_back(frame);
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}
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if (disposeMemory == DisposeAfterUse::YES)
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delete[] data;
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}
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SpriteResource::~SpriteResource() {
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for (uint i = 0; i < _frames.size(); ++i)
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delete _frames[i];
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}
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SpriteFrame::SpriteFrame(AccessEngine *vm, Common::MemoryReadStream &stream, int frameSize) {
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int xSize = stream.readUint16LE();
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int ySize = stream.readUint16LE();
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create(xSize, ySize);
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// Empty surface
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byte *data = (byte *)getPixels();
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Common::fill(data, data + w * h, 0);
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// Decode the data
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for (int y = 0; y < h; ++y) {
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int offset = stream.readByte();
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int len = stream.readByte();
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assert((offset + len) <= w);
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byte *destP = (byte *)getBasePtr(offset, y);
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stream.read(destP, len);
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}
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}
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SpriteFrame::~SpriteFrame() {
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free();
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}
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/*------------------------------------------------------------------------*/
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ImageEntry::ImageEntry() {
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_frameNumber = 0;
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_spritesPtr = nullptr;
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_offsetY = 0;
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_flags = 0;
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}
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/*------------------------------------------------------------------------*/
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static bool sortImagesY(const ImageEntry &ie1, const ImageEntry &ie2) {
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return (ie1._position.y + ie1._offsetY) < (ie2._position.y + ie2._offsetY);
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}
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void ImageEntryList::addToList(ImageEntry *ie) {
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assert(size() < 35);
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push_back(*ie);
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Common::sort(begin(), end(), sortImagesY);
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}
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/*------------------------------------------------------------------------*/
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int ASurface::_leftSkip;
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int ASurface::_rightSkip;
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int ASurface::_topSkip;
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int ASurface::_bottomSkip;
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int ASurface::_clipWidth;
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int ASurface::_clipHeight;
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int ASurface::_lastBoundsX;
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int ASurface::_lastBoundsY;
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int ASurface::_lastBoundsW;
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int ASurface::_lastBoundsH;
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int ASurface::_scrollX;
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int ASurface::_scrollY;
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int ASurface::_orgX1;
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int ASurface::_orgY1;
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int ASurface::_orgX2;
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int ASurface::_orgY2;
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int ASurface::_lColor;
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void ASurface::init() {
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_leftSkip = _rightSkip = 0;
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_topSkip = _bottomSkip = 0;
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_clipWidth = _clipHeight = 0;
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_lastBoundsX = _lastBoundsY = 0;
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_lastBoundsW = _lastBoundsH = 0;
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_scrollX = _scrollY = 0;
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_orgX1 = _orgY1 = 0;
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_orgX2 = _orgY2 = 0;
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_lColor = 0;
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}
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ASurface::~ASurface() {
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free();
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_savedBlock.free();
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}
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void ASurface::create(uint16 width, uint16 height) {
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Graphics::Surface::create(width, height, Graphics::PixelFormat::createFormatCLUT8());
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}
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void ASurface::clearBuffer() {
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byte *pSrc = (byte *)getPixels();
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Common::fill(pSrc, pSrc + w * h, 0);
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}
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bool ASurface::clip(Common::Rect &r) {
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int skip;
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_leftSkip = _rightSkip = 0;
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_topSkip = _bottomSkip = 0;
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if (r.left > _clipWidth) {
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if (r.left >= 0)
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return true;
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skip = -r.left;
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r.setWidth(r.width() - skip);
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_leftSkip = skip;
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r.moveTo(0, r.top);
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}
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int right = r.right - 1;
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if (right < 0)
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return true;
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else if (right > _clipWidth) {
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skip = right - _clipWidth;
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r.setWidth(r.width() - skip);
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_rightSkip = skip;
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}
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if (r.top > _clipHeight) {
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if (r.top >= 0)
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return true;
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skip = -r.top;
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r.setHeight(r.height() - skip);
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_topSkip = skip;
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r.moveTo(r.left, 0);
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}
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int bottom = r.bottom - 1;
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if (bottom < 0)
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return true;
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else if (bottom > _clipHeight) {
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skip = bottom - _clipHeight;
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_bottomSkip = skip;
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r.setHeight(r.height() - skip);
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}
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return false;
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}
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void ASurface::plotImage(SpriteResource *sprite, int frameNum, const Common::Point &pt) {
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SpriteFrame *frame = sprite->getFrame(frameNum);
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Common::Rect r(pt.x, pt.y, pt.x + frame->w, pt.y + frame->h);
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if (!clip(r)) {
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_lastBoundsX = r.left;
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_lastBoundsY = r.top;
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_lastBoundsW = r.width();
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_lastBoundsH = r.height();
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plotFrame(frame, pt);
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}
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}
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void ASurface::plotFrame(SpriteFrame *frame, const Common::Point &pt) {
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frame->copyTo(this, pt);
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// g_system->copyRectToScreen((byte *)getPixels(), 320, 0, 0, 320, 200);
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// g_system->updateScreen();
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/*
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byte *destP = (byte *)getBasePtr(pt.x, _scrollY + pt.y);
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byte *srcP = frame->_data;
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int8 leftVal1 = 18;
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int8 leftVal2 = -8;
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if (_leftSkip) {
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++leftVal2;
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leftVal1 = -12;
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}
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int8 rightVal = (_rightSkip) ? -7 : -8;
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// Skip over any lines of the frame
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for (int yp = 0; yp < _topSkip; ++yp) {
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srcP += *(srcP + 1) + 2;
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}
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byte *srcLineP = srcP;
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byte *destLineP = destP;
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for (int yp = 0; yp < frame->h; ++yp, srcP = srcLineP, destP = destLineP) {
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// Get length of line
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int v = *srcP++;
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int len = *srcP++;
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srcLineP = srcP + len;
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destLineP = destP + this->pitch;
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// Draw the line of the frame
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if (v != 0 || len != 0) {
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warning("TODO: Line draw");
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}
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}
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*/
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}
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void ASurface::copyTo(ASurface *dest, const Common::Point &destPos) {
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for (int yp = 0; yp < h; ++yp) {
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byte *srcP = (byte *)getBasePtr(0, yp);
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byte *destP = (byte *)dest->getBasePtr(destPos.x, destPos.y + yp);
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for (int xp = 0; xp < this->w; ++xp, ++srcP, ++destP) {
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if (*srcP != 0)
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*destP = *srcP;
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}
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}
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}
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void ASurface::copyTo(ASurface *dest, const Common::Rect &bounds) {
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const int SCALE_LIMIT = 0x100;
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int scaleX = SCALE_LIMIT * bounds.width() / this->w;
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int scaleY = SCALE_LIMIT * bounds.height() / this->h;
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int scaleXCtr = 0, scaleYCtr = 0;
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for (int yCtr = 0, y = bounds.top; yCtr < this->h; ++yCtr) {
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// Handle skipping lines if Y scaling
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scaleYCtr += scaleY;
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if (scaleYCtr < SCALE_LIMIT)
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continue;
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scaleYCtr -= SCALE_LIMIT;
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// Handle off-screen lines
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if (y < 0)
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continue;
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else if (y >= dest->h)
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break;
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// Handle drawing the line
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byte *pSrc = (byte *)getBasePtr(0, yCtr);
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byte *pDest = (byte *)dest->getBasePtr(bounds.left, y);
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scaleXCtr = 0;
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int x = bounds.left;
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for (int xCtr = 0; xCtr < this->w; ++xCtr, ++pSrc) {
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// Handle horizontal scaling
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scaleXCtr += scaleX;
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if (scaleXCtr < SCALE_LIMIT)
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continue;
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scaleXCtr -= SCALE_LIMIT;
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// Only handle on-scren pixels
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if (x >= dest->w)
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break;
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if (x >= 0 && *pSrc != 0)
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*pDest = *pSrc;
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++pDest;
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++x;
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}
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++y;
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}
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}
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void ASurface::sPlotB(SpriteFrame *frame, const Common::Rect &bounds) {
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ASurface flippedFrame;
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frame->flipHorizontal(flippedFrame);
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flippedFrame.copyTo(this, bounds);
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}
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void ASurface::sPlotF(SpriteFrame *frame, const Common::Rect &bounds) {
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frame->copyTo(this, bounds);
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}
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void ASurface::plotB(SpriteFrame *frame, const Common::Point &pt) {
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frame->copyTo(this, pt);
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}
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void ASurface::copyBlock(ASurface *src, const Common::Rect &bounds) {
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copyRectToSurface(*src, bounds.left, bounds.top, bounds);
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}
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void ASurface::saveBlock(const Common::Rect &bounds) {
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_savedBounds = bounds;
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_savedBounds.clip(Common::Rect(0, 0, this->w, this->h));
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_savedBlock.free();
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_savedBlock.create(bounds.width(), bounds.height(),
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Graphics::PixelFormat::createFormatCLUT8());
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_savedBlock.copyRectToSurface(*this, 0, 0, _savedBounds);
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}
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void ASurface::restoreBlock() {
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if (!_savedBounds.isEmpty()) {
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copyRectToSurface(_savedBlock, _savedBounds.left, _savedBounds.top,
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Common::Rect(0, 0, _savedBlock.w, _savedBlock.h));
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_savedBlock.free();
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_savedBounds = Common::Rect(0, 0, 0, 0);
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}
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}
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void ASurface::drawRect() {
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Graphics::Surface::fillRect(Common::Rect(_orgX1, _orgY1, _orgX2, _orgY2), _lColor);
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}
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void ASurface::flipHorizontal(ASurface &dest) {
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dest.create(this->w, this->h);
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for (int y = 0; y < h; ++y) {
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const byte *pSrc = (const byte *)getBasePtr(this->w - 1, y);
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byte *pDest = (byte *)dest.getBasePtr(0, y);
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for (int x = 0; x < w; ++x, --pSrc, ++pDest)
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*pDest = *pSrc;
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}
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}
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} // End of namespace Access
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